19. Chemical Thermodynamics
Entropy Calculations
Problem 143a
Textbook Question
Textbook QuestionMethanol 1CH3OH2 is made industrially in two steps from CO and H2. It is so cheap to make that it is being considered for use as a precursor to hydrocarbon fuels, such as methane 1CH42: Step 1. CO1g2 + 2 H21g2 S CH3OH1l2 ΔS° = - 332 J>K Step 2. CH3OH1l2 S CH41g2 + 1>2 O21g2 ΔS° = 162 J>K (k) Calculate an overall ΔG°, ΔH°, and ΔS° for the forma- tion of CH4 from CO and H2.
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